Turn off fno-exceptions for SkRawCodec

gyp/codec.gyp

Index: gyp/codec.gyp
diff --git a/gyp/codec.gyp b/gyp/codec.gyp
index d7272e2a7a9b80f340aa209e1b865151d9fbb09a..d1e239b03506859c2c52bfe0db723dceeaebe4db 100644
--- a/gyp/codec.gyp
+++ b/gyp/codec.gyp
@@ -89,6 +89,9 @@
       'cflags':[
         '-fexceptions',
       ],
+      'cflags!':[
+        '-fno-exceptions',
+      ],
       'include_dirs': [
         '../include/codec',
         '../include/private',
@@ -119,7 +122,9 @@
         ['skia_os == "ios" or skia_os == "mac"', {
           'xcode_settings': {
             'OTHER_CFLAGS': ['-fexceptions'],
+            'OTHER_CFLAGS!': ['-fno-exceptions'],
             'OTHER_CPLUSPLUSFLAGS': ['-fexceptions'],
+            'OTHER_CPLUSPLUSFLAGS!': ['-fno-exceptions'],
           },
         }],
       ],